1320020003323 has 16 divisors (see below), whose sum is σ = 1593645258240. Its totient is φ = 1068081336000.

The previous prime is 1320020003293. The next prime is 1320020003363. The reversal of 1320020003323 is 3233000200231.

It is a happy number.

It is not a de Polignac number, because 1320020003323 - 2¹³ = 1320019995131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1320020003323.

It is not an unprimeable number, because it can be changed into a prime (1320020003363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17622703 + ... + 17697448.

It is an arithmetic number, because the mean of its divisors is an integer number (99602828640).

Almost surely, 2^{1320020003323} is an apocalyptic number.

1320020003323 is a deficient number, since it is larger than the sum of its proper divisors (273625254917).

1320020003323 is a wasteful number, since it uses less digits than its factorization.

1320020003323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35320458.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 1320020003323 its reverse (3233000200231), we get a palindrome (4553020203554).

The spelling of 1320020003323 in words is "one trillion, three hundred twenty billion, twenty million, three thousand, three hundred twenty-three".